4.1.4.2.11 LookupAttr

Informative summary of behavior: The LookupAttr
procedure is a helper function that looks up an object in an NC replica based on an
attributeName=attributeValue criterion. It returns the set of objects that
match the criterion.

rt: set of DSName
if DS_NAME_FLAG_GCVERIFY in flags or IsGC() then
rt := select all O from all
where attrValue in GetAttrVals(O, att, false)
else
rt := select all O from subtree DefaultNC()
where attrValue in GetAttrVals(O, att, false)
endif
return rt